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What are the Applications of Deep Groove Ball Bearings?

Oct. 19, 2021

As an Automotive Bearing Suppliers, share with you.

Deep groove ball bearings can be used in gearboxes, instrumentation, motors, household appliances, internal combustion engines, transportation vehicles, agricultural machinery, construction machinery, engineering machinery, roller skates, yo-yos, etc.

Installation method

Deep groove ball bearing installation method 1: press fit: the inner ring of the bearing and the shaft are tightly matched, and the outer ring and the bearing seat hole are loosely matched, the bearing can be press-fitted on the shaft with a press, and then the shaft and the bearing Put it into the bearing seat hole together, and pad an assembly sleeve made of soft metal material on the end face of the bearing inner ring during press-fitting. The bearing outer ring is tightly fitted with the bearing seat hole. Press the bearing into the bearing seat hole first. At this time, the outer diameter of the assembly sleeve should be slightly smaller than the diameter of the seat hole. If the bearing ring is tightly fitted with the shaft and the seat hole, the inner ring and outer ring of the installation should be pressed in at the same time The structure of the shaft, the seat hole, and the assembly sleeve should be able to simultaneously tighten the end faces of the inner ring and outer ring of the bearing.

Deep Groove Ball Bearings

Deep Groove Ball Bearings

Deep groove ball bearing installation method two: heating fit: by heating the bearing or bearing housing, the use of thermal expansion to transform the tight fit into the loose fit. It is a commonly used and labor-saving installation method. This method is suitable for large interference To install the bearing, put the bearing or the separable bearing ring into the oil tank and heat it evenly at 80-100℃, then remove it from the oil and install it on the shaft as soon as possible, in order to prevent the inner ring end face and shaft shoulder from cooling If the fit is not tight, the bearing can be tightened axially after cooling. When the outer ring of the bearing is tightly fitted with the light metal bearing seat, the hot fitting method of heating the bearing seat can be used to avoid scratches on the mating surface. When heating the bearing with an oil tank, there should be a grid at a certain distance from the bottom of the box, or the bearing should be hung with a hook. The bearing cannot be placed on the bottom of the box to prevent sinking impurities from entering the bearing or uneven heating. There must be a thermometer in the oil tank. Strictly control the oil temperature not to exceed 100°C to prevent the tempering effect and reduce the hardness of the ferrule.

Clearance

The radial clearance of the bearing is divided into original clearance, installation clearance and working clearance. Generally, the original radial clearance of the bearing is greater than the clearance when the bearing is in operation. Clearance is an important technical parameter of the bearing, which directly affects the technical performance of the bearing's load distribution, vibration, noise, friction, service life and mechanical motion accuracy. Strictly speaking, the dynamic load rating of the bearing changes with the size of the clearance. The rated load (C and C0) listed in the product catalog is the load value when the operating clearance is zero. If the clearance is too large, it will cause the internal bearing area of the bearing to decrease, the stress on the rolling contact surface will increase, the motion accuracy of the bearing will decrease, the vibration and noise will increase, and the service life of the bearing will be shortened: if the clearance is too small, it will cause heating and heating. It can even cause the bearing to "seize" during operation. Therefore, it is very important to choose different levels of bearing clearance according to the type of bearing and working conditions.

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